Baking oven



F. C. IHLEE.

BAKING OVEN.

FILED AUG-17.1921.

Feb. 2Q, 1923.

H ll,

(Til? PET?" IDES IEELEE, BAKER BONE to PE:

.vnnnnnrorr on.

oven.

Application filcdnugust 17. 1921. Serial No.

To 41% whom 2'25 may concern it known tl. at l, Fnnnnnron Crmnrns lawn, .a subject of the King of Great Brit ain and Ireland, residing; at l Vest-wood d orlrs, Peterbornugh, in the county of llorthants,England. have invented certain new and useful lmprovements Relating. to

Baking; Ovens, of which the following' is a specification.

This invention relates to bakingovens and has for its object toprovidc for the effective beating of such. ovens with the maintainance therein of an atmosphere containing; the

- steam and gases evolved during baking or v jnecessary or desirable. in the baking of bread loaves and the like. i a

a The invention comprises the combination of a system of direct heating of the oven or 2 eous fuel thereinpwith a system of heating involving the use of the well known Perkins or sealed steam pipes or tubes.

The invention further comprises the use of gaseous fuel combustion chambers arin: association with steam pipes or tubes projecting into or extending through the said oven or baking chamber.

Referring to the accompanying sheet of monas drawings:

to travel through the baking chamber a by an endless chain or other conveyor as b, the said travelling sole-plate or conveyor is heated by means of coal or other combustible gas which is burned within the oven beneath Ethe upper run or service or sole-plate portion of the said conveyor. For this purpose gas supply pipes as c are disposed beneath the sole-plate, such pipes being provided with suitable burner fittings or outlets. The gaseous products of combustion from the burners may be prevented from access to the baking chamber-by the combustion of as ranged within the oven orbalring chamber upper part of the oven, or to the actual baking; chamber or area, tion or the like as (Z, as shown in Figure 4-; or the burner pipes 0 may be disposed above such. S131 as shown at Figures l and 33. In the Fnure 4: arrangement the products of combustion from the burners pass out by way of ducts or pipes as c, whilst with the Figures 1 and 3 arrangement they escape beneaththe hoods f at the ends of the oven chamber. Hinged or other doors may be provided. below and in association. with such hoods.

The upper part of the oven or the actual baking chamber or area a, has disposed thereln, preferably immediately below the crown of the chamber, a number of hea mg; elements. comprising Perkins or closed ended pipes or tubes as g or tubes arranged endless loops or coils. The said tubes project into and receive heat from combustion chambers burning gaseous fuel as with the aforesaid direct heating of the lower partof the oven Such combustionchambers as 71, for the said pipes or tubes 9, are preferably disposed within the oven or baking chamber as shown in the drawings, so that heat absorbed by their walls is given off to the oven chamber a and itscontents and thus assists the heating): effect obtained by the steam pipes:

or tubes. In the oven illustrated each comby a screen or partibustion chamber 7;. is fitted with a pair of burner pipes as and an outlet pipe as j.

The invention is applicable to ovens of various types, as, for example, to ovens with stationary soles or baking surfaces, and to draw-plate and other types of ovens with movable soles or any form of trz veliug baln ing plate.

Having thus described, my invention what I claim new and desire to secure by Let ters Patent is I 1. lln baking ovens, the combination with means for the direct combustion of gaseous fuel within the baking chamber, of steam tubes projecting; within the said chamber and means for heating the said tubes by the combustion of daseous fuel in an atmosphere isolated from the atmosphere of the baking chamber, as set forth.

2. lln baking ovens, the combination with the baking chamber, of steam tubes, means for the direct heating of the said chamber by the combustion of gaseous fuel therein, and

means, independent of the said direct heatthe baking; chamber, and menus for the Will-- In hiistion of gaseous fuel Within the said chum her such means being; illtiQfMJlfiOhi oi the aforesaid means for the direct heating; "i the bat-1' 9f chemhei, as set forth.

In testiinon a whereof I have signoii my 1 name to this specification.

FREDERICK CHARU'IH THY/iii). 

